Strange one this, is there a drain the empties into the rear windscreen, I seem to have water trickle on it a lot, or is there a problem with the rear wash leaking onto the window

sounds like the one way valve is faulty...details how to strip are in the wiki.. ... - .- -.




Y. O. L. O.
.

Inside or outside?

Without a doubt rear washer. There is tons of info in here. Search is your best Chrissie pressie

Outside, thanks will take a look at the wiki

The strip down did not mention the oneway value but I assume, I need to strip and replace the washer as per your wiki entry Stan..

Mine does this. The one way valve helped on my old model but still.... After rain the roof and spoiler gather water and it seems to drip down in one line, roughly under the reversing camera, for ages. This is also true after a car wash. Pristine car but a line of water down the window for hours afterwards! 2012 5.0L S/C
Previous:
3.6 TDV8
4.4 HSE
P38 4.6 HSE
Classic 3.9
90 County
Series3 Lightweight

^^^

That bugs me so much!!! I wash the car a spit shine it and then get the bloody water leaving marks on the rear window until every last drop off the roof is gone 2014 FF Autobiography 5.0 SC
2008 FFRR (sold)
2008 BMW M5